DIN EN 61837-2-2012 频率控制和选择用表面安装的压电器件.标准外形和终端引线的连接.第2部分:陶瓷封装
Surface mounted piezoelectric devices for frequency control and selection - Standard outlines and terminal lead connections - Part 2: Ceramic enclosures (IEC 61837-2:2011); German version EN 61837-2:2011